年份 | 美国 |
---|---|
2023 | - |
2022 | - |
2021 | - |
2020 | 0.842179 |
2019 | 0.830638 |
2018 | 0.834689 |
2017 | 0.828802 |
2016 | 0.830047 |
2015 | 0.838683 |
2014 | 0.86577 |
2013 | 0.902431 |
2012 | 0.941731 |
2011 | 0.96549 |
2010 | 0.997357 |
2009 | 0.993786 |
2008 | 0.979356 |
2007 | 0.999976 |
2006 | 0.971756 |
2005 | 1.01681 |
2004 | 0.981261 |
2003 | 0.994048 |
2002 | 0.990102 |
2001 | 0.965146 |
2000 | 0.995311 |
1999 | 1.09295 |
1998 | 1.12097 |
1997 | 1.09071 |
1996 | 1.13875 |
1995 | 1.20286 |
1994 | 1.28285 |
1993 | 1.38096 |
1992 | 1.47254 |
1991 | 1.65266 |
1990 | 1.71178 |
1989 | - |
1988 | - |
1987 | - |
1986 | - |
1985 | - |
1984 | - |
1983 | - |
1982 | - |
1981 | - |
1980 | - |
1979 | - |
1978 | - |
1977 | - |
1976 | - |
1975 | - |
1974 | - |
1973 | - |
1972 | - |
1971 | - |
1970 | - |
1969 | - |
1968 | - |
1967 | - |
1966 | - |
1965 | - |
1964 | - |
1963 | - |
1962 | - |
1961 | - |
1960 | - |